OF ARTS AND SCIENCES. 213 



monocephalo terminatis ; foliis omnibus angusto-linearibus. — A. di- 

 morpha, var. Jiurjelluris, Gray, in Wilkes Exped. xvii. 3GG. — Wash- 

 ington Territory and eastern part of Oregon, Pichering and Bruclc- 

 enridge, Cusick, IIowcU. A peculiar sjjecies of the marked section to 

 which A. dimorpha belongs. Incomplete specimens were referred to 

 that species, on the strength of Nultall's description, from which it 

 would seem that his female plant might almost be of this species. 

 And the following proves to be a third s[)ecies of this section. 



Antennakia sTENOriiYLLA. Stolonibus flagellisve ut videtur 

 nullis ; caulibus gracilibus 3-6-pollicaribus foliosis foliisque angusto- 

 linearibus acutatis elongatis argenteo-lanatis ; capitulis 2-4 ad apicem 

 nudum caulis capitatim cougestis ; involucre utriusque sexus lin. 2-3 



B. Plcmmek^, Gray, Proc. Am. Acad. xv. 48, &c. Mountain ravines back of 

 Sta. Barbara and Sta. Monica. Miss Plummer (now Mrs. Lemmon), Parish. 

 * * Glabrous or nearly so, smooth, often glutinous : fruiting pappus slightly 



if at all surpassing the style. 

 •<- Bracts of the 15-30-flowered involucre rather narrow and of firm texture, 

 witli green centre or costa : leaves rather small and rigid, serrate with 

 rigid or spinulose teeth. 

 B. THESioiDES, HBK. Includes B. ptarmfarfolia, DC. A common Mexican 



species, collected in S. Arizona by Wright. 

 B. BiGELOvii, Gray, Bot. Mex. Bound. 84. First collected in Arizona and 

 New Mexico by Bigelow, Wi-ight, and Thurber, recently by Lemmon and liusby. 

 t- -f- Bracts of the many-flowered involucre rather narrow, thin and pale 

 but with greenish centre : heads corymbosely cymose : receptacle hemi- 

 spherical or broadly conical ! 

 B. DouGLASii, DC, including B. Hccnkei, DC, which came from Monterey, 

 California, not Mexico. An herbaceous species, wholly Californian. 

 •»-•(-■*- Bracts of the many-flowered involucre broad (outer ovate), thin- 

 chartaceous, rather dry, with narrow scarious margins (at least the 

 inner) yellow or tawny : stems very leafy up to the corymbosely cymose 

 inflorescence : leaves lanceolate, willow-like. 

 B. GLUTiNOSA, Pers. A name to be adopted if this is indeed the Cliilian species, 

 as I suppose. It is certainly both B. ccerulescens and B. Alamani of De Candolle, 

 and probably has other names. It is a tall species, herbaceous from a more 

 or less woody base, common from S. California to S. W. Texas and tlirough 

 Mexico. 

 B. viMiNEA, DC. A. Californian species, which extends from Monterey to 

 San Bernardino Co., is a true shrub, 6 to 12 feet high, with shorter and more 

 entire leaves than the foregoing, bearing smaller clusters of larger heads, 

 terminating short lateral brancblcts. According to Messrs. Parish Brothers 

 it blossoms at the end of winter or in early spring ; while the foregoing 

 blossoms in autumn. 



